Hemophilia is the result of a defective X chromosome. males have XY chromosomes; females have XX chromosomes. If a man has a defective X chromosome, he has no normal X chromosome to balance it out. Therefore, he is more likely to present hemophilia. However, a hemophiliac man's male children will all be healthy, assuming his partner is not a hemophiliac, because the defective X chromosome was not passed on. All his daughters will be carriers, though, regardless of whether their mother is a hemophiliac.
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Because most air pollution is caused by the burning of fossil fuels burned in the home
The 3rd option:<span>It helps maintain the balance of materials needed for survival, such as oxygen and water.
These are essential to make a cell survive. Diffusion gets rid of waste which helps the needed things get to the cell. </span>
